diff --git a/src/nodes/math.js b/src/nodes/math.js
index 601d8beba7..93a4b90536 100755
--- a/src/nodes/math.js
+++ b/src/nodes/math.js
@@ -4,6 +4,7 @@
     //Converter
     function Converter() {
         this.addInput("in", "*");
+	this.addOutput("out");
         this.size = [80, 30];
     }